If she has a positive pregnancy test and tells you.
Partner, Mom, Best Friend, Sister, Doctor
A detailed medical examination would tell if your sister has ever been pregnant or not. If she says she hasn't got any kids, that should pretty much settle it. Or get the money together for DNA testing of you and her. That'll tell.
Help her out, don't bring her down if your disappointed in her. Tell her you'll always be there for her and her baby and just like help her with things or something I mean your not the one pregnant or anything there isn't much you can do...
No, a baby cannot tell if you are pregnant.
no
Yes.
You don't need to tell anyone if a dog is pregnant, but if you want to, you can tell the dog's owners.
sometimes you can tell but you can be on your period and still be pregnant
The sister of Kim Kardshion, Kourtney Kardashion "WAS" pregnant but had her baby already.
if you tell your sister everything and she lies to you she is a bad sister but it depends on the lie
No you cannot. It is impossible to tell from a persons eyes that they are pregnant.
A baby can not tell a woman is pregnant.